Introduce a BuiltinsConstructStub that sets up new.target and does a [[call]] per ES6 9.3.2

src/builtins.h

Index: src/builtins.h
diff --git a/src/builtins.h b/src/builtins.h
index c1159a8d5252848108340f6844b144a6161cb990..ce74e3796449477635009f0d55423f824c53d2e9 100644
--- a/src/builtins.h
+++ b/src/builtins.h
@@ -101,7 +101,7 @@ enum BuiltinExtraArguments {
                                                                               \
   V(InOptimizationQueue, BUILTIN, UNINITIALIZED, kNoExtraICState)             \
   V(JSConstructStubGeneric, BUILTIN, UNINITIALIZED, kNoExtraICState)          \
-  V(JSConstructStubForDerived, BUILTIN, UNINITIALIZED, kNoExtraICState)       \
+  V(JSBuiltinsConstructStub, BUILTIN, UNINITIALIZED, kNoExtraICState)         \
   V(JSConstructStubApi, BUILTIN, UNINITIALIZED, kNoExtraICState)              \
   V(JSEntryTrampoline, BUILTIN, UNINITIALIZED, kNoExtraICState)               \
   V(JSConstructEntryTrampoline, BUILTIN, UNINITIALIZED, kNoExtraICState)      \
@@ -285,7 +285,7 @@ class Builtins {
   static void Generate_CompileOptimized(MacroAssembler* masm);
   static void Generate_CompileOptimizedConcurrent(MacroAssembler* masm);
   static void Generate_JSConstructStubGeneric(MacroAssembler* masm);
-  static void Generate_JSConstructStubForDerived(MacroAssembler* masm);
+  static void Generate_JSBuiltinsConstructStub(MacroAssembler* masm);
   static void Generate_JSConstructStubApi(MacroAssembler* masm);
   static void Generate_JSEntryTrampoline(MacroAssembler* masm);
   static void Generate_JSConstructEntryTrampoline(MacroAssembler* masm);